/**
  ******************************************************************************
  * @file    I2S/SPI_I2S_Switch/stm32f10x_it.c 
  * @author  MCD Application Team
  * @version V3.5.0
  * @date    08-April-2011
  * @brief   Main Interrupt Service Routines.
  *          This file provides template for all exceptions handler and peripherals
  *          interrupt service routine.
  ******************************************************************************
  * @attention
  *
  * THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
  * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE
  * TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY
  * DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING
  * FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE
  * CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
  *
  * <h2><center>&copy; COPYRIGHT 2011 STMicroelectronics</center></h2>
  ******************************************************************************
  */

/* Includes ------------------------------------------------------------------*/
#include "stm32f10x_it.h"

extern u32 TimingDelay;
extern float Vim;
extern float Vavg;
extern u16 time;
extern u16 milestone;
extern u16 total;
extern u8 over_flag;
u16 temp = 0;
u8 temp_flag = 1;
u8 led_flag = 1;
u8 get_flag = 1;
u16 temp_count[2] = {0,0};

/** @addtogroup STM32F10x_StdPeriph_Examples
  * @{
  */

/** @addtogroup I2S_SPI_I2S_Switch
  * @{
  */ 

/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private function prototypes -----------------------------------------------*/
/* Private functions ---------------------------------------------------------*/

/******************************************************************************/
/*            Cortex-M3 Processor Exceptions Handlers                         */
/******************************************************************************/

/**
  * @brief  This function handles NMI exception.
  * @param  None
  * @retval None
  */
void NMI_Handler(void)
{
}

/**
  * @brief  This function handles Hard Fault exception.
  * @param  None
  * @retval None
  */
void HardFault_Handler(void)
{
  /* Go to infinite loop when Hard Fault exception occurs */
  while (1)
  {}
}

/**
  * @brief  This function handles Memory Manage exception.
  * @param  None
  * @retval None
  */
void MemManage_Handler(void)
{
  /* Go to infinite loop when Memory Manage exception occurs */
  while (1)
  {}
}

/**
  * @brief  This function handles Bus Fault exception.
  * @param  None
  * @retval None
  */
void BusFault_Handler(void)
{
  /* Go to infinite loop when Bus Fault exception occurs */
  while (1)
  {}
}

/**
  * @brief  This function handles Usage Fault exception.
  * @param  None
  * @retval None
  */
void UsageFault_Handler(void)
{
  /* Go to infinite loop when Usage Fault exception occurs */
  while (1)
  {}
}

/**
  * @brief  This function handles Debug Monitor exception.
  * @param  None
  * @retval None
  */
void DebugMon_Handler(void)
{
}

/**
  * @brief  This function handles SVCall exception.
  * @param  None
  * @retval None
  */
void SVC_Handler(void)
{
}

/**
  * @brief  This function handles PendSV_Handler exception.
  * @param  None
  * @retval None
  */
void PendSV_Handler(void)
{
}

/**
  * @brief  This function handles SysTick Handler.
  * @param  None
  * @retval None
  */
void SysTick_Handler(void)
{
	TimingDelay--;
}

void TIM2_IRQHandler(void){
	if(TIM_GetITStatus(TIM2,TIM_IT_CC2) != RESET){
		TIM_ClearITPendingBit(TIM2, TIM_IT_CC2);
		
		if(get_flag == 0){
			temp_count[1] = TIM_GetCounter(TIM2);
			get_flag = 1;
			if(temp_count[0]>temp_count[1]){
				Vim = (10000/(temp_count[1]+9999-temp_count[0]))*2*3.6;
			}else if(temp_count[0]<temp_count[1]){
				Vim = (10000/(temp_count[1]-temp_count[0]))*2*3.6;
			}
		}else if(get_flag == 1){
			temp_count[0] = TIM_GetCounter(TIM2);
			get_flag = 0;
		}
			total += 2;
			milestone += 2;
	}
	if(TIM_GetITStatus(TIM2,TIM_IT_Update) != RESET){
		TIM_ClearITPendingBit(TIM2, TIM_IT_Update);
		
		if(temp_flag == 1){
			temp = total;
			temp_flag = 0;
		}
		else if(temp_flag == 0){
			temp_flag = 1;
			if(total == temp){
				Vavg = (milestone/time)*3.6;
				milestone = 0;
				Vim = 0;
				time = 0;
			}else if(total != temp){
				time++;
			}
		}
		
		if(over_flag == 0)
			led_flag =! led_flag;
		else if(over_flag == 1)
			led_flag = 1;
	}
}
/******************************************************************************/
/*                 STM32F10x Peripherals Interrupt Handlers                   */
/*  Add here the Interrupt Handler for the used peripheral(s) (PPP), for the  */
/*  available peripheral interrupt handler's name please refer to the startup */
/*  file (startup_stm32f10x_xx.s).                                            */
/******************************************************************************/

/**
  * @brief  This function handles PPP interrupt request.
  * @param  None
  * @retval None
  */
/*void PPP_Switch_IRQHandler(void)
{
}*/

/**
  * @}
  */ 

/**
  * @}
  */ 

/******************* (C) COPYRIGHT 2011 STMicroelectronics *****END OF FILE****/
